Season 18, Episode 19 - "Chesterton Pains"
Gil discovers that his brother Phil is getting a divorce, and travels to his family home with Bulldog and Kenny to give support. Kenny is low after seeing his ex-wife Rose having fun with another man, so Bulldog tries to cheer him up by getting him a date with one of Gil’s cousins. Bulldog is pleased with Kenny when it becomes apparent that he has hit it off with the hottest cousin available, but later he is stunned to find that Kenny has ended up with Phyllis, an eccentric woman who looks and acts like Gil in many ways. Meanwhile, Gil struggles to give Phil verbal support, and ends up getting involved in a feud between his two brothers when he learns the truth about Phil’s failed marriage.